<!DOCTYPE html>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=/fetch/metadata/resources/helper.js></script>
<script src=/common/utils.js></script>
<body></body>
<script>
  test(t => {
    assert_true(document.createElement('link').relList.supports('prefetch'));
  }, "Browser supports prefetch.");

  function create_test(host, expected) {
    async_test(t => {
      let nonce = token();
      let key = "prefetch" + nonce;

      let e = document.createElement('link');
      e.rel = "prefetch";
      e.href = `https://${host}/fetch/metadata/resources/record-header.py?file=${key}`;
      e.setAttribute("crossorigin", "crossorigin");
      e.onload = t.step_func(e => {
        fetch("/fetch/metadata/resources/record-header.py?retrieve=true&file=" + key)
          .then(t.step_func(response => response.text()))
          .then(t.step_func_done(text => assert_header_equals(text, expected, `<link rel='prefetch' href='https://${host}/...'>`)))
          .catch(t.unreached_func("Fetching and verifying the results should succeed."));
      });
      e.onerror = t.unreached_func();

      document.head.appendChild(e);
    }, `<link rel='prefetch' href='https://${host}/...'>`);
  }

  create_test("{{host}}:{{ports[https][0]}}", {"site":"same-origin", "user":"", "mode": "cors", "dest": "empty"});
  create_test("{{hosts[][www]}}:{{ports[https][0]}}", {"site":"same-site", "user":"", "mode": "cors", "dest": "empty"});
  create_test("{{hosts[alt][www]}}:{{ports[https][0]}}", {"site":"cross-site", "user":"", "mode": "cors", "dest": "empty"});
</script>
